In various embodiments, a mechanical assembly andor storage vessel is fluidly coupled to a circulation apparatus for receiving pressurized heat-transfer fluid from an outlet at a first elevated pressure, boosting a pressure of the heat-transfer fluid to a second pressure larger than the first pressure, and returning heat-transfer fluid to an inlet at a third pressure. The method includes receiving operational data relating to past sales activities and receiving parameters identified as being relevant in determining a likelihood of whether exploitation of a sales opportunity will be successful. These antennas can be cascaded to boost the power or voltage gain.